6–9

L2002 Inverter

Maintenance and Inspection

Monthly and Yearly Inspection Chart
Item InspectedCheck for...

Inspection Cycle

InspectionCriteria

 

 

Month

Year

Method

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ambient

Extreme

 

Thermometer,

Ambient temperature

 

environment

temperatures

 

 

hygrometer

between -10 to 40°C,

 

 

& humidity

 

 

 

non-condensing

 

 

 

 

 

 

 

 

Major devices

Abnormal

 

Visual and aural

Stable environment for

Overall

 

noise & vib.

 

 

 

electronic controls

 

 

 

 

 

 

 

 

Power supply

Voltage

 

Digital volt meter,

200V class:

 

voltage

tolerance

 

 

measure between

200 to 240V 50/60 Hz

 

 

 

 

 

inverter terminals

400V class:

 

 

 

 

 

[L1], [L2], [L3]

380 to 460V 50/60 Hz

 

 

 

 

 

 

 

 

Ground

Adequate

 

Digital volt meter,

5 Meg. Ohms or greater

 

Insulation

resistance

 

 

GND to terminals

 

 

 

 

 

 

 

 

 

Mounting

No loose

 

Torque wrench

M3: 0.5 – 0.6 Nm

 

 

screws

 

 

 

M4: 0.98 – 1.3 Nm

 

 

 

 

 

 

M5: 1.5 – 2.0 Nm

 

 

 

 

 

 

 

 

Components

Overheating

 

Thermal trip events

No trip events

 

 

 

 

 

 

 

 

Housing

Dirt, dust

 

Visual

Vacuum dust and dirt

 

 

 

 

 

 

 

 

Terminal block

Secure

 

Visual

No abnormalities

Main

 

connections

 

 

 

 

 

 

 

 

 

 

circuit

Smoothing

Leaking,

 

Visual

No abnormalities

 

capacitor

swelling

 

 

 

 

 

 

 

 

 

 

 

 

Relay(s)

Chattering

 

Aural

Single click when

 

 

 

 

 

 

switching ON or OFF

 

 

 

 

 

 

 

 

Resistors

Cracks or

 

Visual

Check Ohms of

 

 

discoloring

 

 

 

optional braking res.

 

 

 

 

 

 

 

 

Cooling fan

Noise

 

Power down,

Rotation must be

 

 

 

 

 

manually rotate

smooth

 

 

 

 

 

 

 

 

 

Dust

 

Visual

Vacuum to clean

 

 

 

 

 

 

 

 

Overall

No odor,

 

Visual

No abnormalities

Control

 

discoloring,

 

 

 

 

 

corrosion

 

 

 

 

circuit

 

 

 

 

 

 

Capacitor

No leaks or

 

Visual

Undistorted appearance

 

 

 

 

deformation

 

 

 

 

 

 

 

 

 

 

 

Display

LEDs

Legibility

 

Visual

All LED segments work

 

 

 

 

 

 

 

Troubleshooting Maintenance and

Note 1: The life of a capacitor is affected by the ambient temperature. See “Capacitor Life Curve” on page 6–11.

Note 2: The inverter must be cleaned periodically. If dust accumulates on the fan and heat sink, it can cause overheating of the inverter.